Defined Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2016	Sep. 30, 2015	Sep. 28, 2016		Sep. 30, 2015	Dec. 30, 2015
Components of net periodic benefit cost [Abstract]
Pension settlement loss, pre-tax	$ 0	$ 0	$ 24,297	[1]	$ 0
Additional minimum pension liability	900		900			$ 22,800
Pension Plan [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0	95	105		285
Interest cost	0	745	0		2,237
Expected return on plan assets	0	(877)	0		(2,631)
Amortization of net loss	0	434	0		1,300
Net periodic benefit cost	0	397	105		1,191
Employer contributions			9,500
Assets used for settlements			67,700
Other Defined Benefit Plans [Member]
Components of net periodic benefit cost [Abstract]
Interest cost	23	26	69		80
Amortization of net loss	21	20	64		59
Net periodic benefit cost	$ 44	$ 46	133		139
Employer contributions			100		$ 100
Estimated employer contributions remainder of current fiscal year			$ 100

[1] Before-tax amount related to the liquidation of our Pension Plan that was reclassified from accumulated other comprehensive loss and included as a component of operating (gains), losses and other charges, net in our Condensed Consolidated Statements of Income during the three quarters ended September 28, 2016. See Note 9 for additional details.